Laser processing of discrete sheets of material
CA 2224248 C · Owner: Combibloc, Inc. · Inventors: Robichaud, Arthur W.; Duffy, Timothy W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus (10) for laser treating discrete sheets of material includes passing shingled sheets (18) through a shingle transfer (14) to be treated by a laser system (20). The laser system (20) includes a two axis laser galvo (24) and an additional axis focussing device (22). The discrete continuously moving shingled sheets (18) are tracked and contacted by the laser beam.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 11, 1996 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.